Former U.S. Senate hopeful David Crowe has officially switched races and will challenge U.S. Rep. Raul Grijalva in the Democratic primary.

Crowe, a Tucson defense contractor, filed a statement of candidacy with the Federal Election Commission on Jan. 12, according to FEC records. The same day, he told the Arizona Capitol Times that he wasn’t yet sure whether he would run against Grijalva in the new 3rd Congressional District or run for the seat recently vacated by U.S. Rep. Gabrielle Giffords.